Translation and validation of the Korean version of the 39-item Parkinson's disease questionnaire

Do-Young Kwon, Jae Woo Kim, Hyeo Il Ma, Tae Beom Ahn, Jinwhan Cho, Phil Hyu Lee, Sun Ju Chung, Joong Seok Kim, Jong Sam Baik, Seong Beom Koh

Research output: Contribution to journalArticle

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Abstract

Background and Purpose The importance of health-related quality of life (HrQoL) has been increasingly emphasized when assessing and providing treatment to patients with chronic, progressive, degenerative disorders. The 39-item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient-reporting scale to assess HrQoL in Parkinson's disease (PD). This study evaluated the validity and reliability of the translated Korean version of the PDQ-39 (K-PDQ-39). Methods One hundred and two participants with PD from 10 movement disorder clinics at university-affiliated hospitals in South Korea completed the K-PDQ-39. All of the participants were also tested using the Unified Parkinson's Disease Rating Scale (UPDRS), Korean version of the Mini-Mental State Examination (K-MMSE), Korean version of the Montgomery-Asberg Depression Scale (K-MADS), Epworth Sleepiness Scale (ESS) and non-motor symptoms scale (NMSS). Retests of the K-PDQ-39 were performed over time intervals from 10 to 14 days in order to assess test-retest reliability. Results Each K-PDQ-39 domain showed correlations with the summary index scores (rS=0.559-0.793, p<0.001). Six out of eight domains met the acceptable standard of reliability (Cronbach's α coefficient ≥0.70). The Guttman split-half coefficient value of the K-PDQ-39 summary index, which is an indicator of test-retest reliability, was 0.919 (p<0.001). All of the clinical variables examined except for age, comprising disease duration, levodopa equivalent dose, modified Hoehn and Yahr stage (H&Y stage), UPDRS part I, II and III, mood status (K-MADS), cognition (K-MMSE), daytime sleepiness (ESS) and (NMSS) showed strong correlations with the K-PDQ-39 summary index (p<0.01). Conclusions The K-PDQ-39 has been validated for use in the Korean-speaking PD population. The questionnaire is a valid and reliable assessment tool for assessing the HrQoL of Korean PD patients.

Original languageEnglish
Pages (from-to)26-31
Number of pages6
JournalJournal of Clinical Neurology (Korea)
Volume9
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1

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Parkinson Disease
Reproducibility of Results
Quality of Life
Depression
Republic of Korea
propylene diquat
Surveys and Questionnaires
Movement Disorders
Levodopa
Cognition
Population

Keywords

  • Parkinson's disease
  • Quality of life
  • Validation

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

Cite this

Translation and validation of the Korean version of the 39-item Parkinson's disease questionnaire. / Kwon, Do-Young; Kim, Jae Woo; Ma, Hyeo Il; Ahn, Tae Beom; Cho, Jinwhan; Lee, Phil Hyu; Chung, Sun Ju; Kim, Joong Seok; Baik, Jong Sam; Koh, Seong Beom.

In: Journal of Clinical Neurology (Korea), Vol. 9, No. 1, 01.01.2013, p. 26-31.

Research output: Contribution to journalArticle

Kwon, Do-Young ; Kim, Jae Woo ; Ma, Hyeo Il ; Ahn, Tae Beom ; Cho, Jinwhan ; Lee, Phil Hyu ; Chung, Sun Ju ; Kim, Joong Seok ; Baik, Jong Sam ; Koh, Seong Beom. / Translation and validation of the Korean version of the 39-item Parkinson's disease questionnaire. In: Journal of Clinical Neurology (Korea). 2013 ; Vol. 9, No. 1. pp. 26-31.
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AU - Kim, Jae Woo

AU - Ma, Hyeo Il

AU - Ahn, Tae Beom

AU - Cho, Jinwhan

AU - Lee, Phil Hyu

AU - Chung, Sun Ju

AU - Kim, Joong Seok

AU - Baik, Jong Sam

AU - Koh, Seong Beom

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N2 - Background and Purpose The importance of health-related quality of life (HrQoL) has been increasingly emphasized when assessing and providing treatment to patients with chronic, progressive, degenerative disorders. The 39-item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient-reporting scale to assess HrQoL in Parkinson's disease (PD). This study evaluated the validity and reliability of the translated Korean version of the PDQ-39 (K-PDQ-39). Methods One hundred and two participants with PD from 10 movement disorder clinics at university-affiliated hospitals in South Korea completed the K-PDQ-39. All of the participants were also tested using the Unified Parkinson's Disease Rating Scale (UPDRS), Korean version of the Mini-Mental State Examination (K-MMSE), Korean version of the Montgomery-Asberg Depression Scale (K-MADS), Epworth Sleepiness Scale (ESS) and non-motor symptoms scale (NMSS). Retests of the K-PDQ-39 were performed over time intervals from 10 to 14 days in order to assess test-retest reliability. Results Each K-PDQ-39 domain showed correlations with the summary index scores (rS=0.559-0.793, p<0.001). Six out of eight domains met the acceptable standard of reliability (Cronbach's α coefficient ≥0.70). The Guttman split-half coefficient value of the K-PDQ-39 summary index, which is an indicator of test-retest reliability, was 0.919 (p<0.001). All of the clinical variables examined except for age, comprising disease duration, levodopa equivalent dose, modified Hoehn and Yahr stage (H&Y stage), UPDRS part I, II and III, mood status (K-MADS), cognition (K-MMSE), daytime sleepiness (ESS) and (NMSS) showed strong correlations with the K-PDQ-39 summary index (p<0.01). Conclusions The K-PDQ-39 has been validated for use in the Korean-speaking PD population. The questionnaire is a valid and reliable assessment tool for assessing the HrQoL of Korean PD patients.

AB - Background and Purpose The importance of health-related quality of life (HrQoL) has been increasingly emphasized when assessing and providing treatment to patients with chronic, progressive, degenerative disorders. The 39-item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient-reporting scale to assess HrQoL in Parkinson's disease (PD). This study evaluated the validity and reliability of the translated Korean version of the PDQ-39 (K-PDQ-39). Methods One hundred and two participants with PD from 10 movement disorder clinics at university-affiliated hospitals in South Korea completed the K-PDQ-39. All of the participants were also tested using the Unified Parkinson's Disease Rating Scale (UPDRS), Korean version of the Mini-Mental State Examination (K-MMSE), Korean version of the Montgomery-Asberg Depression Scale (K-MADS), Epworth Sleepiness Scale (ESS) and non-motor symptoms scale (NMSS). Retests of the K-PDQ-39 were performed over time intervals from 10 to 14 days in order to assess test-retest reliability. Results Each K-PDQ-39 domain showed correlations with the summary index scores (rS=0.559-0.793, p<0.001). Six out of eight domains met the acceptable standard of reliability (Cronbach's α coefficient ≥0.70). The Guttman split-half coefficient value of the K-PDQ-39 summary index, which is an indicator of test-retest reliability, was 0.919 (p<0.001). All of the clinical variables examined except for age, comprising disease duration, levodopa equivalent dose, modified Hoehn and Yahr stage (H&Y stage), UPDRS part I, II and III, mood status (K-MADS), cognition (K-MMSE), daytime sleepiness (ESS) and (NMSS) showed strong correlations with the K-PDQ-39 summary index (p<0.01). Conclusions The K-PDQ-39 has been validated for use in the Korean-speaking PD population. The questionnaire is a valid and reliable assessment tool for assessing the HrQoL of Korean PD patients.

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